Variable-velocity ratio gearing



- www@ F. J. HEALEY.

VARIABLE VELoclv RATIO Gemma. i

Ffm-:D AUG. 25. |922. l 3 SHEETS-SHEET -1 www@ F. J. HEALEY. VARmBLe VsLocaTv RATIO BEARING. FsLEn Aue. 25. 1922.'

Jam 2, E923.,

3 SHEETS-SHEET 3 cause rotation of the plates L relative to the plates e. Longitudinal movement of the shafts 0 is eliected by means of the screw g which engages withl the bar. n the screw q being rotated by means of the bevel Wheels s, t, to the 'former of Which is connected the operating handle u.

The spiral grooves 2) may be oppositely arranged in order that upon similar longitudinal movement of thetubular shafts o one sprocket is expanded Whilst the other is contracted.` Alternatively the cam slots in-ay be oppesitely disposed te obtain thesame result. f

In. Fig. 2 ot the drawings, each ot the toothed segments b is provided with parallelly disposed series of teeth o a twin' `roller chain being` employed in thisv instance, but obviously any number of chains may' be .employed, or alternatively, any forinv of chain may lbe employed Without departing from this invention. In every case, 4the teeth o of the toothed segments b will be'properly lselected to accurately mesh with the chain m provided. I `1 The gear box illustrated in Figs. l, 2 and 3 of the drawings is particularly designed as a complete unit incluc'ling` engine starting means`r the driving shaft being;` 'formed hollos7 to permit the vactuatingV ,dear of the clutch o to pass therethrough, Said clutch o transmittingpower from the driving chain embracing the sprocket w to the gear, a. sprocket v/ being provided to receive the moengage the linkso an endless chain and drivii'ig and driven shafts, the combination of nonradial guiding means forthe blocks carried by the said shafts, said means being` adapted to confine the movement of thev blocks through paths the yaxes of which are tangents to circles having' their centers c0- incidinp; respectively With the axes of the said shafts, means adapted to advance the blocks along their paths, and means adapted to rotate the last named means relatively to the guiding; means whereby slack in the chain may be maintained constant, substantially as described.

`ln testimony v'vhereoll I have signed my name to this siiieciiication in the presence ot two subscribing' Witnesses:

l FRANCIS JERMlA H HEALEY.

Titnesses A CiliAnLns J. li. BULLoUGn, @Livia lVnsT. 

